Apparatus for tanning hides.



E.' P, SMITH. APPARATUS POR TANNING HIDES.

APPLICATION FILED MAY 1l, 1908.

Patented Apr. 6, 1909,

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B. P. SMITH.

APPARATUS POR TANNING HIDBS.

APPLIOATION FILED MAY 11, 1908.

Patented Apr. 6, 1909.

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Application filed liay ll,

To all 'whom it may concern.'

Be it known that l, Enwiino F. SMiTn, a citizen of the United States, residing at Corry, in the county of Erie and. State of Fennsylvania, have invented. certain new an d useful Improvements in Apparatus for Tanning Hides, and l do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable i others skilled in the art to which it appertains to ina-ke and use the same, reference being had. to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

invention relates to improvements, in tanning hides, and apparatus therefor.

ln the tanning of .hides particularly soleleather, the thinner parts of the hides tan much quicker than the thicker parts thereof, and the tanning thereof is now the thinner parts of the hide after ne tannin has penetrated them, become more or less crinkled before the tannin has completely penetrated the thicker parts thereof, so as to complete the tanning of the hide, and therefore the crinkled portion of the side of leather so tanned is to a greater or less extent unfit for use as sole-leather- The object of my invention is to overcome this difficulty and at the same time complete the tanning of the hide in much less time than that required to tan hides as it is done at the present time. To accomplish these results, l secure the hides to be tanned upon frames in a stretched condition, and immerse them into the tanning liquor and remove them therefrom at brief intervals, until the tanning process is completed. To do this l have devised a suitable apparatus, the features and operation whereof are hereinafter' fully set forth and described, and illustrated in the accompanying drawings in which:

Figure l is a side view in elevation of my improved tanning apparatus. or plan view thereof. Fig. 3 is a vertical central section of the same on the line .r-r in Figs. 2 and el.. the same on the line y-y in Figs. l, 2 and 3.

Fig. 5 is a view in elevation of one of the rey movable corner bars of the rotating portion of my apparatus. Fig. 6, is a side View in elevation of one of the removable frames of my apparatus, upon which the hide is secured in a stretched condition while being tanned.

ln these drawings A is a tanning vat for Specification of Letters Eatent.

practiced, i

Fig. 2 is atop Fig. l is a vertical section of l fatented. April 6, 1909.

Serial No. #li-32,269.

containing tanning liquor, and B is a shaft mounted upon the central portion of the top of the vat A. in suitable hearings C C, and provided with a suitable driving Wheel E. VUpon this shaft B, .l build a rectangular frame D adapted to be rotated in the vat A. The ends of the frame D, l preferably construct of spokes D ly, and end frames d (t. lhese end frames d d are connected. together, at oppo- ,l site corners diagonally, by fixed transverse l angle bars E, and at the opposite corners diagonally, by removable transverse angle l bars l" E. The angle bars lll are secured to the corners of the frames d d by means of metal straps c bolted to the corners of the frames d d, and the angle bars E/ E are secured to the corners of the end frames d d by means of hinged metal straps e, so that the i' angle bar .F/ E can be coni'feniently removed. Between the centers of the frames d d on l two opposite sides thereof l. secure fixed transverse bars F F. 0n the inner faces of l the transverse bars E and FX, l secure spaceblocks c2 and on opposite sides of the transl verse bar F, l secure like space blocks j", l between which space-blocks e2 and the frames G, hereinafter described, are slid into l the frame l) and held spaced apart, substanl tially as illustrated in Figs. 2 and l. These l frames G are made of four strips of wood secured together so as to form rectangular frames, of such size that they can be slid into place between the space-blocks e'l and f with the edges of one end filling the space between the angle bars E and the central bars and the edges of the opposite ends filling the space between the removable angle bars and the central bars F, so that when the l removable angle bars E are secured in place i' the frames G will be held firmly in place in l the frame D equidistant from each other.

ln opera-tion a hide to be tanned is tacked or otherwise secured upon the opposite sides of each of the frames G in a stretched condition, and the frames are then slid into place in the frame D and the removable angle bars F/ secured in place. The vat A being filled with tanning` liquor, suitable power is applied to the wheel to slowly rotate the frame l) so charged. with the hides to be tanned, which opera-tion., alternately carries the hides secured in each side of the frame l), into and l out of the liquor in the vat A at each revolre tion of the frame D, which operation is continued until the hides in said frame D are completely tanned. rThis operation of the mechanism' hereinbefore described, operates at all Y in and removed from the liquor in said vat, times during the tanning of the hides secured rectangular frames, spaced apart from each in a stretched condition to the sides of the removable frames, which are so spaced apart from each other in the Wheel that as the rotation of the Wheel alternately immerses the frames and the hides thereon into and removes them from the tanning liquor, the

' liquor asses freely between the frames and the hi es stretched thereon so as to contact With every part thereof and thereby facilitate the speedy tanning of the hides so treated.

Having described my invention so as to enable others to construct and utilize the same what I claim as new and desire to secure by Letters Patent is; A,

1. rIhe combination in an apparatus for tanning hides, of a vat adapted to contain tanning liquor, a rotatable frame mounted on a shaft so that substantially one half of said frame is immersed in the tanning liquor' in said vat, means for rotating said frame so that opposite sides thereof are alternately immersed in and removed from the liquor in said vat, and rectangular frames, spaced apart from each other, to the sides of which hides can be secured in a stretched condition, removably secured in said rotatable frame transversely to the shaft therein, substantially as set forth.

2. The combination in an apparatus for tanning hides, of a vat adapted to contain tanning liquor, a rotatable rectangular frame mounted on a shaft so that substantially one half of said frame is immersed in the tanning liquor in saidA vat, means for rotating said frame in said vat so that the opposite sides thereof are alternately immersed other, to the sides of which hides can be secured in a stretched condition7 removably secured in said rotatable frame transversely to the shaft therein, kmeans between said removable frames for separating them from each other, and means for removably securing said frames in place in the rectangular frame, subL stantially as set forth.

3. The combination in an apparatus for tanning hides, of a vat adapted to contain tanning liquor, a rotatable rectangular' frame mounted on a shaft so that substantially one half thereof is immersed in the liquor in said vat, means for rotating said frame so as to alternately immerse and remove opposite sides of said frame from the liquor in said vat, rectangular frames, having an area of approximately one half of that of the rotatable frame, removably mounted in said rotatable 'frame transversely to the shaft and at op osite sides thereof, means for separating anc maintaining the removable frames apart and substantially parallel with each other when in place in the rotatable frame, removable longitudinal bars at diagonally op posite corners of said rotatable frame for securing the removable frames in place therein, and means for securing said removable bars in place on the rotatable frame, substantially as set forth.

In testimony whereof I afiix my signature, in presence of two Witnesses.

EDI/VARI) F. SMITH.

Witnesses:

FLORENCE STOCKERT, I1. J. CURTZE. l 

